Stock exchange prices are quoted daily.

证券交易所每日报价。

Mandelbrot, who did the experiment with stock exchanges prices, for example, noted that although the outcomes were variable, there were in fact certain constancy.

比如，Mandelbrot用股票交易价格做过一个实验，他发现虽然结果不同，但事实上确实有某种恒久性。

The landlord exchanges that part of his rude produce, which is over and above his own consumption, or, what comes to the same thing, the price of that part of it, for manufactured produce.

地主用他的粗产品中超过他自己消费的那部分， 或者说这部分产品的价格， 来交换制成品。